67541081 has 2 divisors, whose sum is σ = 67541082. Its totient is φ = 67541080.

The previous prime is 67541077. The next prime is 67541083. The reversal of 67541081 is 18014576.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59043856 + 8497225 = 7684^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 67541081 - 2² = 67541077 is a prime.

It is a super-2 number, since 2×67541081² = 9123595245297122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 67541083, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (67541083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33770540 + 33770541.

It is an arithmetic number, because the mean of its divisors is an integer number (33770541).

Almost surely, 2^67541081 is an apocalyptic number.

It is an amenable number.

67541081 is a deficient number, since it is larger than the sum of its proper divisors (1).

67541081 is an equidigital number, since it uses as much as digits as its factorization.

67541081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 67541081 is about 8218.3380923396. The cubic root of 67541081 is about 407.2452264712.

The spelling of 67541081 in words is "sixty-seven million, five hundred forty-one thousand, eighty-one".